M&MRefrigeration, Inc.
Compressor and System Controls
Expanded Screw Compressor Product Line
M&M is widely recognized as the industry leader in microprocessor control of screw compressors and refrigeration systems. Now we’ve made the best compressor microprocessor control panel even better:
Standard System Features
- Back-lighted display
- Real-time, animated graphic
- “At A Glance” technology alerts the user of problems by automatically displaying the active alarms/failures screen
- Increased ramp start features based on discharge pressure, motor amps and capacity allow for greater compressor control
- Comprehensive set of energy management features such as extensive setpoints, scheduling, ramp start and powerfail restart dramatically reduces operating cost
- Built-in open communications protocols include Allen Bradley DF1 and Mod Bus RT4
- Additional analog and digital channels are available to control sequencers, condensers, evaporators and more directly from the compressor panel; no additional panels or PC are requir
Standard Compressor Control Features
- Four suction pressure set points
- Eight set point changes per day
- Seven different daily schedules
- Operation log records all operating parameters every 30 seconds
for the previous two hours - Trend log provides 255 sets of the same operating parameters at
an operator-selected interval - Alarm & failure logs display the last 100 messages, irrespective of time of occurrence
- User logs display the last 50 user logins
- Password security system: up to 10 users, with flexible levels of security assigned to each compressor function
- Ramp loading for smooth start-up and loading of the compressor
- Energy consumption data: instantaneous motor kW, demand kW, daily kWh, previous day kWh
- Over 130 status, menu selections and data entre screens
- Over 60 available alarm and failure messages